Sweep auger drive shield with gravity reclaim

ABSTRACT

A sweep auger system having a driveshaft with auger flighting and a backboard extending a length from an inward end to an outward end. An input of a gearbox is connected to an outward end of the drive shaft and a sweep wheel having a plurality of notches, arms and feet is connected to an output of the gearbox. A drive shield is placed around a rearward side of the sweep wheel that forms a channel that is configured to capture grain agitated by the drive wheel. A guide plate is connected to the gearbox and covers a portion of the gearbox. The guide plate angles from an upper outward edge downward and forward to a lower inward edge that is configured to urge the grain captured within the channel of the drive shield to move in front of the sweep auger system reducing grain left in the grain bin.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims benefit of United States Patent and TrademarkOffice Provisional Application Ser. No. 62/453,252 which was filed onFeb. 1, 2017, the entirety of which is incorporated herein by reference.

FIELD OF THE ART

This disclosure relates to the material handling arts and grain handlingarts. More specifically, and without limitation, this disclosure relatesto a sweep auger for use in a grain bin.

BACKGROUND

Grain bins are massive structures used to store bulk flowable grainproducts such as corn, soybeans, wheat, rice, or any other grainproducts or granular or particulate material. Conventional grain binsare generally formed in a cylindrical shape with a corrugated sidewallcovered by a peaked roof. Grain bins vary in height (ranging from twentyfeet high to well over one hundred and fifty feet high), and vary indiameter (ranging from eighteen feet in diameter to well over onehundred and fifty feet in diameter). The storage capacity of moderngrain bins can range anywhere from a few thousand bushels to well over amillion bushels.

Grain bins are periodically filled with grain for storage purposes. Asneeded, grain is removed from the grain bin by opening sumps in anelevated floor of the grain bin that connect to an unload augerpositioned below the floor. However, due to the flow properties ofgrain, or what is known as the angle of repose, the sumps and the unloadauger cannot remove all of the gain from the grain bin.

The angle of repose is the steepest angle of descent relative to thehorizontal plane to which a granular material can be piled withoutslumping. Due to the angle of repose of grain when a sump is opened onlyso much of the grain will naturally flow out of the sump. This leaves areverse cone of grain between the sump and the grain bin wall.

To remove this residual grain left behind after using the sump(s) andthe unload auger, a sweep auger is often employed. Conventional sweepaugers include an auger that extends outward from a central pivot pointand includes a driven wheel or sweep wheel at its end. Conventionalsweep augers are configured to drive around the grain bin as they rotateupon the pivot point while moving residual grain within the grain bintoward the sumps located near the center of the bin.

While conventional sweep augers are effective at removing much of theresidual grain left within a grain bin, conventional sweep augersthemselves leave a lot of grain within the grain bin. This is largelydue to the drive wheel positioned at the outward end of the sweep auger.The drive wheel is configured to rotate and engage the grain and/or theelevated floor of the grain bin in order to drive the sweep augerforward. However, in doing so, the drive wheel tends to throw grainbehind the sweep auger and/or against the grain bin wall and out ofreach for the sweep auger. Any residual grain left behind by the sweepauger must be removed by hand, by sweeping and shoveling, which is amanual-labor task that is laborious, time consuming, tedious andtherefore undesirable.

While various attempts have been made in the prior art to improve sweepaugers, each solution suffers from its own disadvantages and fails toprovide an adequate solution.

Therefore, for all the reasons stated above, and the reasons statedbelow, there is a need in the art for an improved sweep auger system forcleaning grain out of a grain bin.

Thus, it is a primary object of at least one embodiment to provide asweep auger system for cleaning grain out of a grain bin that improvesupon the state of the art.

Another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that reducesthe amount of grain left behind by a sweep auger.

Yet another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that reducesthe amount of manual labor required to clean a grain bin.

Another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that workseffectively.

Yet another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that isefficient to use.

Another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that is easy toassemble.

Yet another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that is robust.

Another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that has a longuseful life.

Yet another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that does notnegatively affect the sweep auger's ability to drive around the grainbin.

Another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that isdurable.

Yet another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that isrelatively inexpensive.

Another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that is highquality.

Yet another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that can beused with practically any grain bin.

Another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that reducesthe number of passes a sweep auger must make in order to empty a grainbin.

Yet another object of at least one embodiment is to provide an improvedsweep auger system for cleaning grain out of a grain bin that makes iteasier to handle grain.

These and other objects, features, or advantages of at least oneembodiment will become apparent from the specification, figures andclaims.

SUMMARY

A sweep auger system having a driveshaft with auger flighting, abackboard and a conduit extending a length from an inward end and anoutward end. An input of a gearbox is connected to an outward end of thedrive shaft and a sweep wheel having a plurality of notches is connectedto an output of the gearbox. A drive shield is placed around a rearwardside of the sweep wheel that forms a channel that is configured tocapture grain agitated by the drive wheel. A guide plate is connected tothe gearbox and covers a portion of the gearbox. The guide plate anglesfrom an outward edge downward to an inward edge and is configured tourge the grain captured within the channel of the drive shield to movein front of the sweep auger system so that it may be removed by thesweep auger.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an exemplary grain handling site, theview showing a grain bin having a foundation, a corrugated sidewall, apeaked roof, an elevated floor, an unload auger positioned below theelevated floor and a transfer device in the form of a transfer augerconnected to the unload auger;

FIG. 2 is a side cut-away elevation view of an exemplary grain bin, theview showing a foundation, a corrugated sidewall, an elevated floor, anunload auger positioned below the elevated floor and a transfer devicein the form of a transfer auger connected to the unload auger; the viewalso showing a sweep auger system positioned above the elevated floorand a plurality of sumps in the elevated floor;

FIG. 3 is a perspective view of an exemplary sweep auger systempositioned within an exemplary grain bin, the view showing a sweep augersystem positioned on top of an elevated floor and just within thesidewall of the grain bin; the view showing the sweep auger connected atits inward end to a pivot point; the view showing a sweep wheelconnected to the outward end of the auger system; the view showing theauger system having a backboard, and a driveshaft with auger fighting;

FIG. 4 is a perspective view of a sweep auger system having a driveshaft surrounded by auger fighting, a backboard and a conduit, a gearbox connected to the outward end of the drive shaft and a sweep wheelconnected to the gear box; the sweep wheel is positioned within a driveshield that forms a channel around the rearward side of the sweep wheeland is configured to capture grain that is moved rearward by the sweepwheel; a guide plate is connected to the gear box and is configured todirect the grain captured within the drive shield back in front of thesweep auger system so that it may be removed by the sweep auger;

FIG. 5 is a top elevation view of the outward end of the sweep augersystem presented in FIG. 4; the view showing the channel formed by thedrive shield that contains the sweep wheel; the view showing the guideplate that directs the grain captured within the channel of the driveshield back in front of the sweep auger system;

FIG. 6 is a front elevation view of the outward end of the sweep augersystem presented in FIG. 4; the view showing the drive shield thatcontains the sweep wheel; the view showing the guide plate that directsthe grain captured within the channel of the drive shield back in frontof the sweep auger system;

FIG. 7 is a side elevation view of the outward end of the sweep augersystem presented in FIG. 4; the view showing the drive shield thatcontains the sweep wheel;

FIG. 8 is a side elevation view of the inward end of the sweep augersystem presented in FIG. 4; the view showing the drive shield thatcontains the sweep wheel; the view showing the guide plate that directsthe grain captured within the channel of the drive shield back in frontof the sweep auger system;

FIG. 9 is a rear elevation view of the outward end of the sweep augersystem presented in FIG. 4; the view showing the drive shield thatcontains the sweep wheel;

FIG. 10 is a bottom elevation view of the outward end of the sweep augersystem presented in FIG. 4; the view showing the channel formed by thedrive shield that contains the sweep wheel; the view showing the guideplate that directs the grain captured within the channel of the driveshield back in front of the sweep auger system;

FIG. 11 is a perspective view outward end of the of the sweep augersystem presented in FIG. 4; the view showing the channel formed by thedrive shield that contains the sweep wheel; the view showing the guideplate that directs the grain captured within the channel of the driveshield back in front of the sweep auger system;

FIG. 12 is another perspective view of the outward end of the of thesweep auger system presented in FIG. 4;

FIG. 13 is another perspective view of the outward end of the of thesweep auger system presented in FIG. 4;

FIG. 14 is another perspective view of the outward end of the of thesweep auger system presented in FIG. 4;

FIG. 15 is a close-up bottom elevation view of the outward end of thesweep auger system presented in FIG. 4; the view showing the channelformed by the drive shield that contains the sweep wheel; the viewshowing the guide plate that directs the grain captured within thechannel of the drive shield back in front of the sweep auger system;

FIG. 16 is another perspective view of the outward end of the of thesweep auger system presented in FIG. 4;

FIG. 17 is an exploded perspective view of the outward end of the sweepauger system presented in FIG. 4; the view showing the inner portion andthe outer portion of the drive shield; the view showing the guide plate;the view showing the sweep wheel;

FIG. 18 is an exploded perspective view of the outward end of the sweepauger system presented in FIG. 4; the view showing the inner portion andthe outer portion of the drive shield; the view showing the guide plate;the view showing the sweep wheel;

FIG. 19 is a perspective view inside of a grain bin, the view showing asweep auger system having a sweep wheel, the view showing the feet ofthe sweep wheel having a plurality of teeth thereon, wherein these teethare configured to mesh with corresponding features in a strip offlashing positioned around the exterior of the grain bin floor at theintersection of the grain bin floor and the sidewall of the grain bin;

FIG. 20 is a close-up perspective view of FIG. 19, the view showing asweep auger system having a sweep wheel, the view showing the feet ofthe sweep wheel having a plurality of teeth thereon, wherein these teethare configured to mesh with corresponding features in a strip offlashing positioned around the exterior of the grain bin floor at theintersection of the grain bin floor and the sidewall of the grain bin;

FIG. 21 is a close-up perspective view of the sweep wheel of FIGS. 19and 20, the view showing the feet of the sweep wheel having a pluralityof teeth thereon, wherein these teeth are configured to mesh withcorresponding features in a strip of flashing positioned around theexterior of the grain bin floor at the intersection of the grain binfloor and the sidewall of the grain bin;

FIG. 22 is a close-up elevation view of the sweep wheel of FIGS. 19-21,the view showing the feet of the sweep wheel having a plurality of teeththereon, wherein these teeth are configured to mesh with correspondingfeatures in a strip of flashing positioned around the exterior of thegrain bin floor at the intersection of the grain bin floor and thesidewall of the grain bin;

FIG. 23 is a close-up elevation view of the sweep wheel of FIGS. 19-22,the view showing the feet of the sweep wheel having a plurality of teeththereon, wherein these teeth are configured to mesh with correspondingfeatures in a strip of flashing positioned around the exterior of thegrain bin floor at the intersection of the grain bin floor and thesidewall of the grain bin;

FIG. 24 is a close-up elevation view of the sweep wheel of FIGS. 19-23,the view showing the feet of the sweep wheel having a plurality of teeththereon, wherein these teeth are configured to mesh with correspondingfeatures in a strip of flashing positioned around the exterior of thegrain bin floor at the intersection of the grain bin floor and thesidewall of the grain bin; the view showing the teeth of the feet of thesweep wheel meshed with the features of the flashing of the grain binfloor;

FIG. 25 is a close-up elevation view of FIG. 24;

FIG. 26 is a perspective view of the upper surface of a panel offlashing used in association with a grain bin floor, the view showingthe upper surface of the panel of flashing having a plurality offeatures that are configured to mesh with corresponding teeth in thefeet of a sweep wheel;

FIG. 27 is a perspective view of the lower surface of a panel offlashing used in association with a grain bin floor, the view showingthe panel of flashing having a plurality of features that are configuredto mesh with corresponding teeth in the feet of a sweep wheel;

FIG. 28 is an elevation view of the upper surface of a panel of flashingused in association with a grain bin floor, the view showing the panelof flashing having a plurality of features that are configured to meshwith corresponding teeth in the feet of a sweep wheel;

FIG. 29 is a side elevation view of a panel of flashing used inassociation with a grain bin floor, the view showing the panel offlashing having a plurality of features that are configured to mesh withcorresponding teeth in the feet of a sweep wheel;

FIG. 30 is another side elevation view of a panel of flashing used inassociation with a grain bin floor, the view showing the panel offlashing having a plurality of features that are configured to mesh withcorresponding teeth in the feet of a sweep wheel.

DETAILED DESCRIPTION

In the following detailed description, reference is made to theaccompanying drawings which form a part hereof, and in which is shown byway of illustration specific embodiments in which various embodiments ofthe invention may be practiced. These embodiments are described insufficient detail to enable those skilled in the art to practice theinvention, and it is to be understood that other embodiments may beutilized and that mechanical, procedural, and other changes may be madewithout departing from the spirit and scope of the disclosure. Thefollowing detailed description is, therefore, not to be taken in alimiting sense, and the scope is defined only by the appended claims,along with the full scope of equivalents to which such claims areentitled.

As used herein, the terminology such as vertical, horizontal, top,bottom, front, back, end, sides, left, right, and the like arereferenced according to the views, pieces, parts, components and figurespresented. It should be understood, however, that the terms are usedonly for purposes of description, and are not intended to be used aslimitations. Accordingly, orientation of an object or a combination ofobjects may change without departing from the scope of the disclosure.

While reference is made herein to use of the system in association withgrain and a grain bin, the system and disclosure is not limited to usewith grain and/or a grain bin. Instead, the system and methods presentedherein can be used in any arrangement where granular or particulatematerial is to be moved, whether within a bin or other holding device.

With reference to the figures, a sweep auger system 10 (or system 10 orsweep auger 10) is presented. The sweep auger system 10 is shown in usewith an exemplary grain bin 12 that includes foundation 14, sidewall 16,peaked roof 18, elevated floor 20, unload auger 22, transfer device 24,one or more sumps 26 and pivot point 28. System 10 also includes driveshaft 30, auger fighting 32, backboard 34, conduit 36, sweep wheel 38having notches 40, arms 42 and feet 44, gearbox 46, drive shield 48, anda guide plate 50, among other components as is described further herein.

Grain Bin. In the arrangement shown, as one example, system 10 is usedin association with a conventional grain bin 12. Grain bin 12 isgenerally cylindrical in shape and includes a foundation 14 positionedat its lower end, a sidewall 16 that extends upward from foundation 14and a peaked roof 18 that covers the hollow interior formed by sidewall16.

Grain bin 12 includes an elevated floor 20 positioned within the hollowinterior of grain bin 12. Elevated floor 20 is positioned a distanceabove foundation 14. The upper surface of elevated floor 20 supports thegrain within grain bin 12, while the space below the elevated floor 20provides room for air flow as well as providing room for unload auger22.

Unload auger 22 is any device which is configured to remove grain fromgrain bin 12. Unload auger 22 is positioned below one or more sumps 26in elevated floor 20. In the arrangement shown, sumps 26 are doors inthe elevated floor 20 that can be opened and closed. When opened, sumps26 provide access for grain within grain bin 12 to reach unload auger22.

Unload auger 22 is connected to transfer device 24 and transfers grainfrom sumps 26 to transfer device 24 (which in the arrangement shown is avertical auger). Transfer device 24 is any device configured to receivegrain from unload auger 22 and transfer the grain to another component.In one arrangement, transfer device 24 may be a transfer auger thattransfers the grain to another bin, a dryer, a truck, a barge, a railcar, a leg, a belt, a conveyor, a gravity tube or any other device. Inanother arrangement, transfer device 24 may be a leg, a conveyor, abelt, a vertical auger, an unload auger, or any other device that isconfigured to move grain away from grain bin 12.

Grain bin 12 also includes a pivot point 28. Pivot point 28 is anyconnection point for sweep auger system 10 to connect to and rotatearound. In one arrangement, as is shown, pivot point 28 is positioned atthe center or approximately the center of elevated floor 20 and theinward end 54 of sweep auger system 10 connects to pivot point 28.

Sweep Auger System:

Sweep auger system 10 is formed of any suitable size, shape and designand is configured to clean residual grain from grain bin 12 after asmuch grain has been removed using sumps 26 as is possible. In thearrangement shown, as one example, sweep auger system 10 extends alength from an inward end 54 to an outward end 56. Sweep auger system 10includes a forward side 58, or leading edge, and a rearward side 60, ortrailing edge. Sweep auger system 10 also includes an upper side 62 anda lower side 64.

The inward end 54 of sweep auger system 10 connects to pivot point 28which facilitates rotation of sweep auger system 10 around the elevatedfloor 20 of grain bin 12. Sweep auger system 10 includes a drive shaft30, auger flighting 32, backboard 34 and conduit 36 that extends all ora portion of the distance between the inward end 54 of sweep augersystem 10 to the outward end 56 of sweep auger system 10, as is furtherdescribed herein. The outward end 56 of sweep auger system 10 includessweep wheel 38 having notches 40, arms 42 and feet 44, gearbox 46, driveshield 48, and guide plate 50, as is further described herein.

Drive Shaft:

Drive shaft 30 is formed of any suitable size, shape and design and isconfigured to transfer rotation along all or a part of the length ofauger system 10. In the arrangement shown, as one example, drive shaft30 is a generally circular shaped tube that extends all or a part of thelength of sweep auger system 10 from inward end 54 to outward end 56.However, any other shaped member is hereby contemplated for use such assquare, rectangular, hexagonal, or the like.

In the arrangement shown, the inward end 54 of drive shaft 30 operablyconnects to pivot point 28 of grain bin 12 which facilitates rotation ofpivot point 28 around grain bin 12. In the arrangement shown, theoutward end 56 of drive shaft 30 operably connects to the inward end ofgearbox 46. Through this connection, drive shaft 30 transfers rotationto gearbox 46.

In the arrangement shown, auger flighting 32 is connected to and extendsaround drive shaft 30 in a generally continuous helical nature. In thisway, drive shaft 30 provides support for auger fighting 32 and aconnection point for auger fighting 32. As drive shaft 30 rotates, sorotates auger fighting 32.

Drive shaft 30, and auger fighting 32, may be formed of a singlecontinuous member between inward end 54 and outward end 56.Alternatively, drive shaft 30 and auger fighting 32 may be formed of aplurality of lengths that are connected together to form the desiredlength between inward end 54 and outward end 56.

Drive shaft 30 is connected to backboard 34 by a plurality of brackets66. These brackets 66 provide support for drive shaft 30 while allowingfor the needed rotation of drive shaft 30. The outer bracket 68operatively connects backboard 34 to an inward surface of gearbox 46. Inthis way, outer bracket 68 provides support, strength and rigidity togearbox 46 as well as drive shaft 30. In one arrangement, as is shown,breaks in the auger flighting 32 are positioned at brackets 66 and outerbracket 68. Drive shaft 30 rotates around a first axis of rotation 70that extends through approximately the center of drive shaft 30 andconnects to an input of gearbox 46.

Auger Flighting:

Auger fighting 32 is formed of any suitable size, shape and design andis configured to rotate with drive shaft 30 and carry grain towardspivot point 28 and the center of grain bin 12. In the arrangement shown,as one example, auger fighting 32 is formed of a thin layer of materialthat extends around drive shaft 30 in a helical manner. In thearrangement shown, auger flighting 32 connects at its inward end to theexterior surface of drive shaft 30 and extends outwards a distancetherefrom. Like drive shaft 30, auger flighting 32 rotates around afirst axis of rotation 70 that extends through approximately the centerof drive shaft 30.

Backboard:

Backboard 34 is formed of any suitable size, shape and design and isconfigured to provide support for the length of sweep auger system 10 aswell as to provide a rearward stop for grain that is conveyed by sweepauger system 10. In the arrangement shown, as one example, backboard 34is formed of a generally rectangular shaped elongated member having acenter wall 72, end walls 74 and rear wall portions 76. However, anyother shape or configuration is hereby contemplated for use as backboard34, such as a curved wall that surrounds a portion of drive shaft 30 andauger fighting 32, a plurality of straight walls connected in angledalignment to one another, or any other shaped member.

Center wall 72 is generally flat and extends from inward end 54 tooutward end 56. In the arrangement shown, center wall 72 extends in agenerally vertical manner. The upper and lower edges of center wall 72connect to the forward edge of end walls 74 which extend rearwardtherefrom. End walls 74, like center wall 72, are generally flat inshape and extend from inward end 54 to outward end 56. Opposing endwalls 74 extend in approximate parallel spaced relation to one another,and extend in approximate perpendicular alignment to center wall 72.

The rearward edges of end walls 74 connect to rear wall portions 76which extend inward a distance toward one another. Rear wall portions76, like end walls 74 and center wall 72, are generally flat and squarein shape and extend from inward end 54 to outward end 56. Opposing rearwall portions 76 extend in approximate planar relation to one anotherwith a space positioned between their inward ends. In this way, rearwall portions 76 form only a part or portion of center wall 72 and leavethe rearward side of backboard 34 partially open thereby providingaccess to the interior of backboard 34, or more specifically therearward side of center wall 72 and the interior surfaces of opposingend walls 74. Rear wall portions 76 extend in approximate parallelspaced alignment to center wall 72 and extend in approximateperpendicular alignment to end walls 74.

In the arrangement shown, the combination of center wall 72, end walls74 and rear wall portions 76 form a C-shaped channel or a rectangularchannel with a slot positioned in its rearward wall when viewed from itsend. This combination of features provides backboard 34 with the neededstrength and rigidity to strengthen the auger sweep system 10. However,any other shaped structural member is hereby contemplated for use asbackboard 34 such an I-beam, a wide flange beam, a ninety degree anglebar, a Z-bar, a C-channel, an L-bar, solid bar, a solid plate, acombination of members that form a frame, or the like or any combinationthereof.

In the arrangement shown, the forward surface of center wall 72 ispositioned just rearward a distance from auger fighting 32. In this way,as drive shaft 30 and auger fighting 32 rotate, this causes grain tomove toward pivot point 28. The grain is prevented from moving rearwardof sweep auger system 10 by backboard 34. As such, the presence ofbackboard 34 helps to move grain toward pivot point 28.

Outer bracket 68 is connected to the outward end 56 of backboard 34.Outer bracket 68 connects to the forward surface of center wall 72 ofbackboard 34, as well as to the inward surface of gearbox 46 adjacentoutward end 56 of drive shaft 30 and auger fighting 32.

The lower end of backboard 34 terminates a small distance above elevatedfloor 20 and the lower most edge of sweep wheel 38. While this gapallows some grain to slide past sweep auger system 10 by fitting underbackboard 34, this gap provides clearance to allow sweep auger system 10to rotate around pivot point 28.

Conduit 36 is positioned rearward of backboard 34 and is connected tobackboard 34 by a plurality of brackets 78.

Conduit:

Conduit 36 is formed of any suitable size, shape and design and isconfigured to provide additional structural strength and rigidity to theauger sweep system 10 as well as to connect components of the sweepauger system 10 to one another. In the arrangement shown, as oneexample, conduit 36 is formed of an elongated hollow tube that isgenerally square or rectangular in shape. However, any other shapedstructural member is hereby contemplated for use conduit 36 such anI-beam, a wide flange beam, a ninety degree angle bar, a Z-bar, aC-channel, an L-bar, a cylindrical pipe, a solid bar, a solid rod, acombination of members that form a frame, or the like or any combinationthereof.

Conduit 36 extends from its inward end 54 to its outward end 56 and isformed of a single continuous member between inward end 54 and outwardend 56. Alternatively, conduit 36 may be formed of a plurality oflengths that are connected together to form the desired length betweeninward end 54 and outward end 56. Conduit 36 connects to backboard 34 bya plurality of brackets 78 spaced along the length of conduit 36.

In the arrangement shown, as one example, brackets 78 include a rearwardwall 80 that connects at its upper and lower edges to angled wall 82.The forward most edge of angled wall 82 connect to tabs 84. In thearrangement shown, as one example, rearward wall 80 extends in agenerally vertical plane. The rearward surface of rearward wall 80connects to the forward surface of conduit 36. In one arrangement,conduit 36 is welded to rearward wall 80, however any other manner ormethod of connecting two components together is hereby contemplated foruse for connecting conduit 36 to rearward wall 80 such as screwing,bolting, welding, soldering, snap fitting or the like.

In the arrangement shown, as one example, the upper and lower edges ofrearward wall 80 connect to the rearward edges of angled wall 82. Angledwalls 82 angle outward away from each other as they extend forwardtoward backboard 34. The forward most edges of angled walls 82 connectto the rearward edges of tabs 84. In the arrangement shown, as oneexample, tabs 84 extend in approximate parallel spaced relation to oneanother and are configured to connect to and extend along the exteriorsurface of end walls 74 of backboard 34. Once connected in this manner,tabs 84 are bolted to end walls 74, however any other manner or methodof connecting two components together is hereby contemplated for use,such as welding, soldering, screwing, snap fitting or the like.

In the arrangement shown, as one example, the outward end 56 of conduit36 also connects to the rearward surface of drive shield 48. In thearrangement shown, as one example, the drive shield 48 is connecteddirectly to the conduit 36. In this way conduit 36 provides additionalstrength and rigidity to backboard 34, drive shield 48, and essentiallyall the other components of the sweep auger system 10.

Sweep Wheel:

Sweep wheel 38 is formed of any suitable size, shape and design and isconfigured to rotate and engage the grain and/or the elevated floor 20and drive sweep auger system 10 around pivot point 28. In thearrangement shown, as one example, when viewed from the forward side 58or rearward side 60, sweep wheel 38 is generally planar in shape. In thearrangement shown, as one example, sweep wheel 38 has a generallycircular exterior shape.

In the arrangement shown, as one example, the exterior periphery ofsweep wheel 38 includes a pattern of notches 40 that are separated byarms 42 that include feet 44 thereon. Notches 40, arms 42 and feet 44may be formed of any suitable size, shape and design that facilitatessuitable agitation of grain and provides suitable driving force. In thearrangement shown, as one example, when viewed from the side, notches 40have a generally flat and straight wall that connects at its outwardedges to arms 42. Arms 42 have generally flat and straight opposingsides or walls that extend in approximate parallel spaced relation toone another that terminate in a generally flat or straight end. In thearrangement shown, the wall that defines notches 40 and the wall thatdefines arms 42 connect to one another at slightly greater than a ninetydegree angle, such that the arms 42 taper ever so slightly narrower asthey extend away from notches 40. However any other arrangement ishereby contemplated for use.

Initially, arms 42 extend outward from notches 40 in a generally flatand planar arrangement. After extending away from the wall of notches 40a distance, arms 42 bend inward at corners 86. In the arrangement shown,as one example, arms 42 extend inward at approximately a ninety degreeangle to the plane of main body of sweep wheel 38, however any otherarrangement is hereby contemplated for use.

Feet 44 are formed of any suitable size, shape and design and areconfigured to be connected to the outward ends of arms 42 and to providetraction to sweep wheel 38 and to agitate the grain. In the arrangementshown, as one example, when viewed from the side, feet 44 includegenerally flat and square leading and trailing edges 88 that connect attheir outward ends to an exterior wall 90.

In the arrangement shown, as one example, the leading and trailing edges88 of feet 44 extend in approximate parallel spaced relation to oneanother and form a wall that extends in approximate perpendicularalignment to the exterior circumference of the circular shape of sweepwheel 38. The generally flat and square wall of leading edge 88, and itsapproximate perpendicular alignment to the exterior circumference of thecircular shape of sweep wheel 38, has a tendency to engage the grain andagitate the grain. As such, when the leading edge 88 of feet 44 engagesthe grain, grain tends to be carried by the sweep wheel 38 rearward, asis further described herein.

In the arrangement shown, as one example, the exterior wall 90 of feet44 connect at its forward edge to the outward edge of leading edge 88and connect at its rearward edge to the outward edge of trailing edge88. When viewed from the side, exterior wall 90 is generally flat andstraight and extends in approximate perpendicular alignment to theplanes established by leading and trailing edges 88. In one arrangement,exterior wall 90 includes a plurality of features which are any deviceor structure that helps to increase the friction and drive provided bysweep wheel 38. In the arrangement shown, as one example, the featuresin the exterior wall 90 of feet 44 are a plurality of teeth 91 thatextend across the exterior wall 90 of feet 44 from its interior edge toits exterior edge. In the arrangement shown, as one example, these teeth91 extend in approximate perpendicular alignment to the sides 92 of feet44, and extend in approximate parallel spaced alignment to the leadingand trailing edges 88 of feet 44, as well as in parallel alignment tothe axis of rotation of the drive shaft 30. However any otherarrangement is hereby contemplated for use, such as angled grooves,protruding features, recesses or the like or any other feature thatincreases friction and engagement with the grain over a smooth surface.

In one arrangement, as one example, when viewed from the side, along theaxis of rotation of drive shaft 30, the teeth 91 have a pair of planarfaces that angle away from exterior wall 90 and toward one another toform a peak that rises above the exterior wall 90. In the arrangementshown, both sides of the peak of teeth 91 are equal, thereby forming aseries of isosceles triangles. In one arrangement, the plurality ofteeth 91 are similarly or identically shaped to one another therebyforming a series of similar or identical peaks and valleys.

In one arrangement, the forward or leading portion of exterior wall 90is generally flat and planar and does not include any teeth 91 thereon.In this arrangement, teeth 91 rise out of this flat planar section andform a series of peaks and valleys just rearward of this flat planarsection. In an alternative arrangement, teeth 91 extend across theentirety of exterior wall 90 or any other portion of exterior wall 90.

In one arrangement, as is shown, teeth 91 are configured to mesh orengage with similarly shaped features 200 in flashing 202 of elevatedfloor 20, as is further described herein.

In one arrangement, as is shown, to extend the surface area of edges 88,the outward edges of feet 44 include extensions 89 that extend away fromexterior wall 90 and toward the axis of rotation of drive shaft 30 adistance. These extensions 89 extend past interior wall 93 of feet 44 adistance in approximate planar alignment with the plane of edges 88. Inthe arrangement shown, interior wall 93 and exterior wall 90 extend inapproximate planar spaced relation with one another. In this way, arecess is formed between opposing extensions 89 and interior wall 93.The addition of extensions 89 to feet 44 increases the agitation andmovement of grain, whereas the addition of teeth 91 increases thefriction and/or grip and/or traction generated by feet 44.

In the arrangement shown, as one example, when viewed from the forwardside 58, or rearward side 60, the sides 92 of feet 44 are generally flatand extend in approximate planar alignment to one another. In thearrangement shown, as one example, when viewed from the forward side 58,or rearward side 60, the sides 92 of feet 44 extend in approximateperpendicular alignment to the leading and trailing edges 88 of feet 44.In the arrangement shown, as one example, when viewed from the forwardside 58, or rearward side 60, the sides 92 of feet 44 extend inapproximate perpendicular alignment to the exterior wall 90 and interiorwall 93 of feet 44.

In one arrangement, feet 44 are formed of a composite material, such asa plastic, rubber, a urethane material, or other non-metallic materialwhereas the other portions of sweep wheel 38 are formed of a metallicmaterial. In one arrangement, feet 44 are molded directly onto arms 42of sweep wheel 38, whereas in another arrangement feet 44 are connectedto arms 42 by any other manner, method or means such as frictionfitting, gluing, welding, adhering, bolting, screwing, snap fitting orany other manner of connecting two components together. By forming feet44 out of a non-metallic material this provides some give, cushionand/or shock-absorption properties to sweep wheel 38 and reduces some ofthe wear that metal-on-metal engagement can cause. However, care istaken to select a non-metallic material that has adequate materialproperties, such as strength, hardness, durability and coefficient offriction, to name a few.

Sweep wheel 38 connects to gearbox 46 at output shaft 94 that forms asecond axis of rotation 96 which, in the arrangement shown, is spaced adistance above and rearward of the first axis of rotation 70 thatengages drive shaft 30. In the arrangement shown, as one example, sweepwheel 38 includes a mounting feature 98 which is positionedapproximately at the center of sweep wheel 38. In the arrangement shown,mounting feature 98 is a generally elongated slot that engages asimilarly shaped feature in the outward end of output shaft 94 ofgearbox 46, however any other shaped feature is hereby contemplated foruse. The engagement between the mounting feature 98 of sweep wheel 38with the output shaft 94 of gearbox 46 facilitates rotation of sweepwheel 38 when output shaft 94 rotates.

Gearbox:

Gearbox 46 is formed of any suitable size, shape and design and isconfigured to receive rotational input from drive shaft 30 at one speedand output rotation on sweep wheel 38 at a second rotational speed. Inone arrangement, it is desirable to have drive shaft 30 rotate at ahigher rotational speed than the sweep wheel 38 and in this arrangementgearbox 46 serves as a reduction gearbox. Alternatively, in anotherarrangement, it may be desirable to have the sweep wheel 38 rotate at ahigher rotational speed than the drive shaft and in this arrangementgearbox 46 serves as a multiplier gearbox.

In the arrangement shown, as one example, gearbox 46 has a housing thatincludes a plurality of gears (not shown) that provide the desiredchange in rotational speed between first axis of rotation 70 (or input)and second axis of rotation 96 (or output). The inward end of gearbox 46connects to the outward end of drive shaft 30 at first axis of rotation70 (or input). The outward end of gearbox 46 includes an output shaft 94that connects to the inward side of sweep wheel 38 at second axis ofrotation 96 (or output). In the arrangement shown, as one example,second axis of rotation 96 is positioned a distance above and rearwardof first axis of rotation 70. This arrangement allows the diameter ofsweep wheel 38 to be larger than the diameter of auger flighting 32. Thelarger diameter sweep wheel 38 allows for improved traction andappropriate grain agitation.

In the arrangement shown, as one example, gearbox 46 is connected to theoutward end 56 of backboard 34 by outer bracket 68 that includes arearward flange 100 and a forward flange 102. Rearward flange 100 andforward flange 102 are generally planar in shape and extend inapproximate perpendicular alignment to one another. In the arrangementshown, rearward flange 100 connects to the outward end 56 of the forwardsurface of center wall 72 of backboard 34 in generally flat and flushengaging alignment. The forward flange 102 extends forward from rearwardflange 100 and connects to the inward surface of gearbox 46. Rearwardflange 100 includes a plurality of openings that receive bolts thereinthat connect rearward flange 100 to backboard 34. Similarly, forwardflange 102 includes a plurality of openings that receive bolts thereinthat connect forward flange 102 to gearbox 46. Forward flange 102 alsoincludes openings therein to receive features around first axis ofrotation 70 and second axis of rotation 96.

Drive shield 48 as well as guide plate 50 are also connected to gearbox46.

Drive Shield:

Drive shield 48 is formed of any suitable size, shape and design and isconfigured to capture grain that is agitated by the sweep wheel 38 andis configured to facilitate the return of this agitated grain into thepath of the sweep auger system 10 so that it may be removed by the sweepauger system 10 instead of being left behind. In the arrangement shown,as one example, drive shield 48 is formed of an inner portion 104 and anouter portion 106 that when viewed from above or below forms a channel108 that extends vertically. The rearward portion of sweep wheel 38rotates within this channel 108. This channel 108 serves to capturegrain as the sweep auger system 10 moves forward and the sweep wheel 38spins therein. As the sweep wheel 38 rotates, grain piles up withinchannel 108. Once the level of the grain is above the gearbox 46 andguide plate 50, the grain flows by gravity over the gearbox 46 and guideplate 50 and into the path of sweep auger system 10.

In the arrangement shown, as one example, the inner portion 104 of driveshield 48 includes a forward flange 110 that connects to a first section112 that connects to an angled wall 114 that connects to a back wall 116that connects to a rearward flange 118 of outer portion 106. When viewedfrom above or below forward flange 110, first section 112, angled wall114 and rearward flange 118 extend in a generally flat and straightmanner from their upper edge to their lower edge.

In the arrangement shown, as one example, forward flange 110 isgenerally flat and straight from its upper edge to its lower edge.Forward flange 110 includes a plurality of features or cut-outs thereinthat provide clearance for components of the system 10, such as thewalls of backboard 34. When drive shield 48 is in place on the outwardend 56 of backboard 34 the upper portion 120 of forward flange 110 ispositioned above the upper surface of backboard 34 and extends inward adistance therefrom in approximate parallel spaced relation to theforward surface of center wall 72. In this way, the upper portion 120 offorward flange 110 of drive shield 48 provides added surface area thatserves to help to maintain flying or bouncing grain in front of sweepauger system 10.

Similarly, when drive shield 48 is in place on the outward end 56 ofbackboard 34 the lower portion 122 of forward flange 110 is positionedbelow the lower surface of backboard 34 and extends inward a distancetherefrom in approximate parallel spaced relation to the forward surfaceof center wall 72. In this way, the lower portion 122 of forward flange110 of drive shield 48 provides added surface area that serves to helpto maintain grain in front of sweep auger system 10 and serves toprevent excess grain from flowing out and under drive shield 48.

In one arrangement, forward flange 110 connects adjacent the forwardsurface, or alternatively the rearward surface, of center wall 72 ofbackboard 34 by one or more bolts. In one arrangement the bolts thatconnect rearward flange 100 of outer bracket 68 to backboard 34 alsoconnect forward flange 110 to backboard 34. In another arrangement,while the forward flange 110 may be positioned in close proximity to, oreven frictional engagement to backboard 34, forward flange 110 may befree with respect to backboard 34 and backboard 34 and forward flange110 may be allowed to have a certain amount of relative movement or givewith respect to one another. The inward edge of forward flange 110connects to the forward edge of first section 112.

In the arrangement shown, as one example, first section 112 is generallyflat and straight as it extends from its upper edge to its lower edge.The forward edge of first section 112 connects to the inward edge offorward flange 110. First section 112 extends rearward from forwardflange 110 in approximate perpendicular alignment to forward flange 110.First section 112 includes a plurality of openings that facilitate thepassage of bolts through first section 112 and into gearbox 46 therebyconnecting first section 112, and drive shield 48 in general, to gearbox46. The rearward edge of first section 112 connects to the forward edgeof angled wall 114.

In the arrangement shown, as one example, angled wall 114 is generallyflat and straight as it extends from its upper edge to its lower edge.The forward edge of angled wall 114 connects to the rearward edge offirst section 112. Angled wall 114 extends rearward from the rearwardedge of first section 112 as it extends outward at an angle. Therearward edge of angled wall 114 connects to the inward edge of backwall 116.

In the arrangement shown, as one example, back wall 116 is generallyflat and straight as it extends from its upper edge to its lower edge.The inward edge of back wall 116 connects to the rearward edge of angledwall 114. The plane formed by back wall 116 extends in approximateparallel spaced relation to the plane of forward flange 110 as well asextending in parallel spaced relation to the axis of rotation of driveshaft 30 and the length of conduit 36. Back wall 116 includes aplurality of openings that facilitate the passage of bolts through backwall 116 and into conduit 36 thereby connecting back wall 116, and driveshield 48 in general, to conduit 36 thereby providing additionalstrength and rigidity to drive shield 48. Alternatively the rearwardsurface of back wall 116 is welded to the forward surface of conduit 36or alternatively the two components are connected together by any othermanner, method or means.

In the arrangement shown, as one example, outer portion 106 includesrearward flange 118. In the arrangement shown, as one example, rearwardflange 118 is generally flat and straight as it extends from its upperedge to its lower edge. The outward edge of rearward flange 118 connectsto the rearward edge of outer portion 106. The plane formed by rearwardflange 118 extends in approximate perpendicular alignment to the planeouter portion 106, and extends in approximate parallel spaced relationto the plane formed by first section 112. Rearward flange 118 includes aplurality of openings that facilitate the passage of bolts throughrearward flange 118 and back wall 116.

In the arrangement shown, as one example, outer portion 106 is generallyflat and straight from its upper edge to its lower edge. The rearwardedge of outer portion 106 connects to the rearward flange 118. The planeformed by outer portion 106 extends in approximate perpendicularalignment to the plane of rearward flange 118. In use, when assembled,the back wall 116 of inner portion 104 is positioned in overlappingcondition with the rearward flange 118 of outer portion 106 and they areconnected together in overlapping engagement with one another. Therearward flange 118 of outer portion 106 includes a plurality ofopenings that facilitate the passage of bolts through rearward flange118 of outer portion 106 and back wall 116 of inner portion 104 therebyconnecting the two components together.

Outer portion 106 defines the outer wall or boundary of the pocketformed by drive shield 48. In this way, outer portion 106 helps to keepgrain within the pocket formed by drive shield 48 and prevents grainfrom spilling out the outward end 56 of sweep auger system 10.

In the arrangement shown, inner portion 104 and outer portion 106 areformed of separate pieces of material, inner portion 104 and outerportion 106 may be formed of different materials. In one arrangement,inner portion 104 is formed of a metallic material while outer portion106 is formed of a composite material or non-metallic material, such asan ultra high molecular weight polyethylene (UHMW) or another plastic ornon-metallic material and/or composite material. The use of a compositematerial (such as UHMW) for outer portion 106 provides the benefits ofbeing extremely durable, and in some cases self-lubricating, while alsobeing more forgiving when engaging metallic parts, such as the sidewall16 of grain bin 12. Alternatively, it is hereby contemplated that driveshield 48 may be formed of a single unitary piece (thereby obviating theneed for inner portion 104 and outer portion 106) that is formed of asingle material, such as metal or composite, or any other number ofpieces that are connected together that may be formed of the same ordifferent materials.

The forward edge of outer portion 106 includes a slot 124 that forms anopening 126. Opening 126 is configured to receive washer 128 therein.

Washer 128 is generally circular in shape and includes an opening atapproximately their middle. This opening receives a shaft of bolt 130there through. Bolt 130 extends through the opening in washer 128 andsweep wheel 38 and threads into the outward end of output shaft 94 ofgearbox 46. In this way, as output shaft 94 rotates so rotates sweepwheel 38 and washer 128.

In one arrangement, to help prevent outer portion 106 of drive shield 48from bowing outward during use, additional structural members areconnected to, and/or placed outside of the outer side of outer portion106. These structural members provide additional support for theextended plane of outer portion 106 and prevents outer portion 106 fromexcessively bowing or bending outward under pressure, which can lead tofailure. In this way, the placement, installation and use of theseadditional structural members help to maintain the shape and dimensionsof drive shield 48 and therefore helps the sweep auger system 10 tofunction as intended. In one arrangement, as one example, one form of astructural support member is an bar, plate or other component thatconnects and/or extends between the upper edges of inner portion 104 andouter portion 106. In another arrangement, a hood or cover is placedover the upper end of inner portion 104 and outer portion 106 whichencloses the upper end of channel 108 and which facilitates thestrengthening of the drive shield 48 and prevents the bowing of outerportion 106. This arrangement also captures upwardly flying grain andkeeps this flying grain within channel 108. However, any other form ofsupport is hereby contemplated for use.

Guide Plate:

Guide plate 50 is formed of any suitable size, shape and design and isconfigured to guide grain captured within the channel 108 of driveshield 48 back in front of the path of sweep auger system 10 so that thegrain can be moved by auger flighting 32 to a sump 26. In thearrangement shown, as one example, guide plate 50 covers a portion ofgearbox 46 and includes a rearward section 132, a center section 134, aforward section 136, an inner flange 138 and an outer flange 140. In thearrangement shown, as one example, guide plate 50 angles from itsoutward edge downward toward its inward edge so as to direct grainflowing out of the channel 108 back in front of the path of sweep augersystem 10 and toward auger fighting 32.

In the arrangement shown, as one example, rearward section 132 of guideplate 50 is generally planar in shape and extends from an outward edgeto an inward edge, wherein the outward edge is higher than the lowerinward edge. The rearward edge of rearward section 132 engages or is inclose proximity to the upper surface of gearbox 46. Rearward section 132extends from its rearward edge upward at an angle before connecting tothe rearward edge of center section 134 of guide plate 50. In this way,rearward section 132 provides a smooth ramp up and over a portion ofgearbox 46 as well as helps to urge grain to slide by the force ofgravity toward the outward end 56 of drive shaft 30 and auger fighting32 and/or in front of the travel path of sweep auger system 10.

In the arrangement shown, as one example, center section 134 of guideplate 50 is generally planar in shape and extends from an outward edgeto an inward edge, wherein the outward edge is higher than the lowerinward edge. Center section 134 extends from its rearward edge whichconnects to the forward edge of rearward section 132, to its forwardedge which connects to the rearward edge of forward section 136. Centersection 134 angles slightly downward from its rearward edge to itsforward edge. The combined angles of center section 134 of guide plate50 helps to urge grain to slide by the force of gravity toward theoutward end 56 of drive shaft 30 and auger fighting 32 and/or in frontof the travel path of sweep auger system 10.

In the arrangement shown, as one example, forward section 136 of guideplate 50 is generally planar in shape and extends from an outward edgeto an inward edge, wherein the outward edge is higher than the lowerinward edge. Forward section 136 extends from its rearward edge whichconnects to the forward edge of center section 134, to its forward edgewhich terminates at or near the upper forward surface of gearbox 46.Forward section 136 angles slightly downward from its rearward edge toits forward edge. The combined angles of forward section 136 of guideplate 50 helps to urge grain to slide by the force of gravity toward theoutward end 56 of drive shaft 30 and auger fighting 32 and/or in frontof the travel path of sweep auger system 10.

In the arrangement shown, as one example, an inner flange 138 isconnected to the inner edge of guide plate 50 and extends downwardtherefrom. In the arrangement shown, inner flange 138 includes aplurality of openings that facilitate connection of guide plate 50 togearbox 46. In the arrangement shown, as one example inner flange 138 isonly connected to forward section 136 and inner flange 138 is placedover a portion of forward flange 102 of outer bracket 68. In thisarrangement, forward flange 102 of outer bracket 68 and inner flange 138of drive shield are bolted simultaneously to gearbox 46. Howeverconnection to any other portion of guide plate 50 is hereby contemplatedfor use as is attachment to gearbox 46 by any other manner, method ormeans. In the arrangement shown, the inner flange 138, the rearwardsection 132, center section 134 and forward section 136 are formed of asingle continuous piece with curves or fold lines separating andconnecting the components together.

In the arrangement shown, as one example, an outer flange 140 isconnected adjacent the outer edge of guide plate 50 and includes aplurality of features that are configured to engage the exterior surfaceof gearbox 46. As such, in the arrangement shown, as one example, thelower surface of outer flange 140 rests upon gearbox 46 or in closeproximity thereto and provides support for guide plate 50. Howeverconnection or attachment by any other manner, method or means is herebycontemplated for use. In the arrangement shown, the outer flange 140 isa separate piece from inner flange 138, the rearward section 132, centersection 134 and forward section 136 and is connected by way of aplurality of bolts or another manner, method or means to the otherportions of guide plate 50. In an alternative arrangement outer flange140 forms a continuous piece with inner flange 138, rearward section132, center section 134 and forward section 136.

In Operation:

Drive shield 48 is installed by placing the center portion of forwardflange 110 in engagement with the outward end of the rearward surface ofthe center wall 72 of backboard 34. In this position, the upper portion120 of forward flange 110 extends above the outward end of center wall72 and the lower portion 122 of forward flange 110 extends below theoutward end of center wall 72. The first section 112 of inner portion104 of drive shield 48 is bolted to the inward edge of gearbox 46 andthe back wall 116 of inner portion 104 of drive shield 48 is bolted toconduit 36.

Sweep wheel 38 is installed onto output shaft 94 such that the arms 42extend inward over gearbox 46. Sweep wheel 38 is positioned within androtates within the channel 108 formed by drive shield 48. Outer portion106 of drive shield 48 is installed onto the inner portion 104 of driveshield 48 by overlapping the rearward flange 118 of outer portion 106with the back wall 116 of inner portion 104 and bolting the twocomponents together. Washer 128 is installed within opening 126 of outerportion 106 and bolt 130 is extended through, washer 128, sweep wheel 38and into the threaded opening in the end of output shaft 94 and thecomponents are tightened together such that as output shaft 94 rotatesso rotates sweep wheel 38, washer 128, and bolt 130.

Guide plate 50 is installed onto gearbox 46 by passing bolts through theinner flange 138 and into gearbox 46 thereby connecting the twocomponents together. When guide plate 50 is installed on gearbox 46 therearward section 132, center section 134 and forward section 136 cover aportion of the gearbox 46 and the lower end of the outer flange 140 isin engagement with an upper exterior surface of gearbox 46.

Once assembled, when sweep auger system 10 is activated drive shaft 30and auger fighting 32 rotate thereby forcing grain inward toward thecenter of grain bin 12. As the drive shaft 30 rotates this causesrotation of the gears within gearbox 46 which outputs rotation at outputshaft 94. As output shaft 94 rotates, so rotates sweep wheel 38, washer128, and bolt 130.

As sweep wheel 38 rotates the iterative passing of notches 40 and feet44 agitate the grain. The rotation of sweep wheel 38 and theconfiguration of sweep wheel 38, notches 40, arms 42 and feet 44 have atendency to move grain rearward as the sweep auger system 10 ispropelled forward. As the sweep wheel 38 rotates within the channel 108formed by drive shield 48 the pocket formed by drive shield 48 capturesthe grain within channel 108 and prevents the sweep wheel 38 fromthrowing the grain rearward. As the sweep wheel 38 rotates the grainpiles up within channel 108 and the grain engages the generally flat andsquare leading edges 88 of feet 44 as well as the generally flat andsquare leading edges of arms 42. This engagement between these surfacesof sweep wheel 38 carries the grain upward within channel 108. As thelevel of grain reaches the guide plate 50 the configuration of the guideplate 50 urges the grain to drain over guide plate 50 and gearbox 46 bythe force of gravity toward the outward end of drive shaft 30 and augerfighting 32 and/or in front of the path of sweep auger system 10. Thatis, when the level of grain within channel 108 reaches the guide plate50 the shape and angle of guide plate 50 causes the grain to fall overgearbox 46 and into an area where sweep auger system 10 is capable ofmoving the grain inward.

In this way, the use of drive shield 48 and guide plate 50 capture grainthat otherwise would have been left behind by a conventional sweepauger. It has been tested that use of the sweep auger system 10 similarin ways to embodiments presented herein reduces the amount of grain leftbehind by a conventional sweep auger by over 80%.

One of the benefits of the system 10 is that close tolerances betweenthe rotating sweep wheel 38 and the drive shield 48 are not required toprovide excellent performance. Instead, the drive shield 48 provides anample amount of clearance for sweep wheel 38 to rotate within thechannel 108 formed by drive shield 48. This allows for the passage oflarge clumps of grain therein and there through. Or, said another way,when clumps of grain are encountered by the sweep wheel 38 they do notget caught between close tolerances between the sweep wheel 38 and thedrive shield 48, whereas in prior art systems when a clump isencountered it can get caught or jammed between the sweep wheel andother components of the prior art system which can break the system orprevent unloading until it is manually cleaned. As such, the ampleamount of clearance provided for in the system 10 presented hereinprovides for greater durability and robustness and allows the system 10to operate even when clumps are encountered.

Corresponding Teeth in Feet and Features in Elevated Floor:

In one arrangement, to increase friction and traction between sweepwheel 38 and elevated floor 20, feet 44 include teeth 91 that mesh ormate with or engage features 200 in elevated floor 20. In onearrangement, as one example, when viewed from the side, along the axisof rotation of drive shaft 48, the exterior wall 90 of feet 44 includeteeth 91. Teeth 91 may be formed of any suitable size, shape and designand represent a protrusion or change in what is otherwise a planarsurface of exterior wall 90. These teeth 91 are configured to impartincreased friction, traction or resistance as opposed to a smooth orflat surface of exterior wall 90.

In one arrangement, as is shown, when viewed from the side along theaxis of rotation of drive shaft 30, teeth 91 are triangular in shape orangled in shape. That is, in this arrangement, teeth 91 have a pair offlat (however curved is also contemplated) planar faces that angle awayfrom exterior wall 90 and toward one another to form a peak that risesabove the plane of exterior wall 90. In the arrangement shown, as oneexample, both sides of the peak of teeth 91 are approximately equal, inthis way a plurality of teeth 91 form a series of isosceles trianglesalong exterior wall 90. In one arrangement, the plurality of teeth 91are similarly or identically shaped to one another thereby forming aseries of similar or identical peaks and valleys that extend in acontinuous manner across a portion of or the entire exterior wall 90 offeet 44. That is, in one arrangement, teeth 91 form a continuous patternwherein the plane of each tooth 91 connects to a peek on one end and avalley on the opposite end.

In one arrangement, the forward edge or leading edge of exterior wall 90is generally flat and planar and does not include any teeth 91 thereon.In this arrangement, teeth 91 rise out of this flat planar section andform a series of peaks and valleys just rearward of this flat planarsection. In an alternative arrangement, teeth 91 extend across theentirety of exterior wall 90 or any other portion of exterior wall 90.

Flashing:

In one arrangement, as is shown, teeth 91 are configured to be used withcorresponding flashing 202. Flashing 202 is formed of any suitable size,shape and design and is configured to be used with feet 44 having teeth91 and helps to provide increased engagement, resistance, grip and/ortraction between feet 44 and elevated floor 20. In one arrangement, asone example, teeth 91 of feet 44 mesh or engage or mate with similarlyshaped features 200 in an upper surface 204 of flashing 202. That is, inone arrangement, a strip of flashing 202 is positioned as the outwardedge of elevated floor 20. This flashing 202 is placed at theintersection of elevated floor 20 and sidewall 16 of grain bin 12. Saidanother way, flashing 202 is placed as a ring around the outer edge ofthe elevated floor 20 just inside of sidewall 16. In this way, flashing202 forms a portion of the elevated floor 20 that sweep wheel 38 travelsover as sweep auger system 10 rotates around pivot point 28. Themeshing, matching or mating features of flashing 202 and teeth 91 offeet 44 facilitate increased friction and drive of sweep wheel 38 whichfacilitates improved rotation of sweep auger system 10 around pivotpoint 28.

In one arrangement, as is shown, the strip of flashing 202 that extendsaround the grain bin 12 just inside sidewall 16 is formed of a pluralityof panels that are connected together. In one arrangement, each panel offlashing 202 which forms a ring around grain bin 12 is a generally flatmember that extends from an inward edge 206 to an outward edge 208, andextends between opposing sides 210, however any other shape is herebycontemplated for use. In one arrangement, a flange 212 extends upward adistance at the outward edge 208 of flashing 202. In one arrangement,flange 212 extends upward from outward edge 208 and is used to attach tothe interior surface of sidewall 16 of grain bin 12. This flange 212also helps to define the outward edge of the path of sweep auger system10 as it rotates around pivot point 28, and in this way flange 212serves to provide some protection to the interior surface of sidewall 16and guidance for sweep auger system 10. In an alternative arrangement,flanges extend downward from the outward edge 208, inward edge 206,and/or sides 210 and facilitate connection to supports positioned underthe elevated floor 20 and/or connection to flanges of other panels offlashing 202 or other components of elevated floor 20. Flashing 202 maytake on any other shape and may include any other features thatfacilitate use of flashing 202 as part of or in association withelevated floor 20.

All or a portion of the upper surface of flashing 202 between inwardedge 206 may include a pattern of features 200. In one arrangement, asis shown, when viewed from the side, along the axis of rotation of driveshaft 30, features 200 are triangular in shape or angled in shape withthe valleys of each feature 200 connecting to adjacent features 200 in acontinuous manner. That is, in this arrangement, features 200 have apair of flat (however curved is also contemplated) planar faces thatangle away from the plane formed by flashing 202 and toward one anotherto form a peak that rises above the plane of flashing 202. In thearrangement shown, both sides of the peak of features 200 are equal,thereby forming a series of isosceles triangles. In one arrangement, theplurality of features 200 are similarly or identically shaped to oneanother thereby forming a series of similar or identical peaks andvalleys that extend in a continuous manner across the upper surface 204of flashing 202 from side 210 to side 210. In the arrangement shown,these features 200 also extend all or a portion of the distance frominward edge 206 to outward edge 208. In the arrangement shown, thelength of each feature 200 extends perpendicular to the direction oftravel of sweep wheel 38, or, said another way; the length of eachfeature 200 extends in parallel relation to the sides 210 of flashing202 and perpendicular to the inward edge 206 and outward edge 208 offlashing 202.

The strip of flashing 202 that extends around the periphery of elevatedfloor 20 just inside of sidewall 16 is formed, manufactured andassembled in any manner. In one arrangement, strip of flashing 202 isformed of a plurality of panels of flashing 202 that are positioned inside 210 to side 210 alignment which are connected to one another and/orto the interior surface of sidewall 16 and/or to other components ofelevated floor 20, such as planks 214. In one arrangement, flashing 202is placed on top of and in addition to elevated floor 20. In anotherarrangement, flashing 202 is formed as part of elevated floor 20 and isintegrated within the planks 214 and other components of elevated floor20.

In one arrangement, to facilitate air flow through flashing 202,flashing includes a plurality of perforations 216 therein. Perforations216 are formed of any suitable size, shape and design and are configuredto allow air to pass through flashing 202. In one arrangement,perforations 216 are elongated slots or openings that extend laterallyin parallel spaced relation with the length of the peaks of features200. In one arrangement, perforations 216 are positioned between thepeak and valley of each feature 200, on the side of the peak oppositethe direction of travel. As feet 44 rotate around drive shaft 30, themeshing of teeth 91 with features 200 help to drive sweep auger system10 around pivot point 28. By positioning perforations 216 on the side offeature 200 opposite the direction of travel, this helps to limit theamount of particles that are forced through the perforations 216 byinteraction between teeth 91 of feet 44 and features 200. This isbecause the push-off that occurs between teeth 91 of feet 44 andfeatures 200 largely occurs on the side of feature 200 in the directionof travel. As such, by placing the perforation 216 on the side offeature 200 opposite the direction of travel essentially places theperforation 216 in the lee of this movement and interaction. In analternative arrangement, perforations 216 are placed in any other partof flashing 202, such as the valley, the peak, or on any other part offeatures 200 and/or flashing 202. In an alternative arrangement,perforations 216 are placed in any other arrangement or orientation onflashing 202.

Notably, the push-off that occurs between teeth 91 of feet 44 andfeatures 200 provides the benefit that feet 44 can be formed of a harderand more durable material. This is because the pushing action thatoccurs between the surfaces of teeth 91 of feet 44 and features 200reduces the importance of the coefficient of friction of the materialused to form feet 44. This allows feet to be formed of a material thatis harder (that imparts less friction, because less friction is needed)and more durable. As such, this arrangement makes the sweep wheel 38 andfeet 44 last longer.

In one arrangement, instead of features 200 being placed in the uppersurface 204 of panels of flashing 202, features 200 are formed in theupper surface of elevated floor 20 in the area adjacent the outward edgeof elevated floor 20 and just inside of sidewall 16. This arrangementeliminates the need for using separate flashing 202 components inassociation with elevated floor 20.

In one arrangement, features 200 start from just inside or adjacent theinterior surface of sidewall 16 and extend a length therefrom anywherefrom a few inches to a few feet. In one arrangement, features 200 extendfrom adjacent the interior surface of sidewall 16 inward anywhere fromsix inches to twenty four inches, or more, however any other length orrange is hereby contemplated for use.

In operation, when sweep wheel 38 having feet 44 with teeth 91 is usedin association with an elevated floor 20 having mating or matchingfeatures 200, as the sweep wheel 38 rotates, grain is moved rearwarduntil the grain is cleared away. Once the grain is cleared away from thepath of the rotating sweep wheel 38, feet 44 of sweep wheel 38 engagethe upper surface 204 of flashing 202. When feet 44 of sweep wheel 38engage the upper surface 204 of flashing 202, the teeth 91 of feet 44mesh with the features 200 of flashing 202 thereby providing increasedfriction, grip, traction and/or engagement, thereby providing increaseddrive causing the sweep auger system 10 to rotate around pivot point 28.In this way, the use of feet 44 having teeth 91 in association withmatching features 200 in elevated floor 20 improves the performance ofsweep auger system 10.

From the above discussion it will be appreciated that the sweep augersystem for cleaning grain out of a grain bin presented herein improvesupon the state of the art.

Specifically, the sweep auger system for cleaning grain out of a grainbin presented herein: reduces the amount of grain left behind by a sweepauger; reduces the amount of manual labor required to clean a grain bin;works effectively; is efficient; is easy to assemble; is robust; has along useful life; does not negatively affect the sweep auger's abilityto drive around the grain bin; is durable; is relatively inexpensive; ishigh quality; can be used with practically any grain bin; reduces thenumber of passes a sweep auger must make in order to empty a grain bin;makes it easier to handle grain, among countless other advantages andimprovements.

It will be appreciated by those skilled in the art that other variousmodifications could be made to the device without parting from thespirit and scope of this invention. All such modifications and changesfall within the scope of the claims and are intended to be coveredthereby.

What is claimed:
 1. A system for unloading grain out of a grain bin,comprising: a sweep auger; the sweep auger extending a length from aninward end to an outward end; the sweep auger having a forward side anda rearward side; the sweep auger having a drive shaft with fightingextending around the drive shaft; the sweep auger having a backboardpositioned rearward of the driveshaft; a gearbox adjacent the outwardend of the sweep auger; a sweep wheel connected adjacent the outward endof the sweep auger; a drive shield connected adjacent the outward end ofthe sweep auger; wherein the drive shield forms a pocket around thesweep wheel; a guide plate positioned within the pocket; wherein thesweep wheel spins within the pocket of the drive shield, such that grainis captured within the pocket and the guide plate directs grain into thepath of the sweep auger; wherein the guide plate at least partiallyoverlaps the gearbox in a vertical plane.
 2. The system of claim 1wherein when the sweep wheel spins within the pocket of the driveshield, grain piles up within the pocket until the level of the grain isat or above the guide plate, at which point the grain flows by the forceof gravity over the guide plate and downward into the path of the sweepauger.
 3. The system of claim 1 wherein the gearbox is positionedbetween the drive shaft and the sweep wheel.
 4. The system of claim 1wherein the sweep wheel includes a plurality of feet.
 5. The system ofclaim 1, wherein the sweep wheel includes a plurality of notches,wherein the plurality of notches of the sweep wheel are separated byarms that extend inward and include feet on the arms.
 6. The system ofclaim 1, wherein the gearbox is connected to the drive shaft and thesweep wheel, wherein the gearbox is positioned within the pocket of thedrive shield, wherein the guide plate connects to the gearbox and coversa portion of the gearbox.
 7. The system of claim 1 wherein the sweepwheel includes feet, wherein the feet include teeth that providetraction.
 8. The system of claim 1 wherein the sweep wheel includesfeet, wherein the feet include teeth that mesh with correspondingfeatures in a floor of the grain bin.
 9. A system for unloading grainout of a grain bin, comprising: a sweep auger; the sweep auger extendinga length from an inward end to an outward end; the sweep auger having aforward side and a rearward side; the sweep auger having a drive shaftwith fighting extending around the drive shaft; the sweep auger having abackboard positioned rearward of the driveshaft; a gearbox connectedadjacent the outward end of the sweep auger; a guide plate directlyconnected to the gearbox; a sweep wheel connected adjacent the outwardend of the sweep auger; a drive shield connected adjacent the outwardend of the sweep auger; wherein the drive shield forms a pocket; thesweep wheel is positioned within the pocket of the drive shield; whereinthe sweep wheel spins within the pocket of the drive shield, such thatgrain is captured within the pocket and flows out into the path of thesweep auger.
 10. The system of claim 9, wherein the guide plate ispositioned within the pocket, wherein the guide plate directs grainpiled up within the pocket to move by gravity into the path of the sweepauger.
 11. The system of claim 9, wherein the gearbox is positionedbetween the drive shaft and the sweep wheel.
 12. The system of claim 9wherein the sweep wheel includes a plurality of feet.
 13. The system ofclaim 9 wherein the sweep wheel includes a plurality of notches, whereinthe plurality of notches of the sweep wheel are separated by arms thatextend inward and include feet on the arms.
 14. The system of claim 9wherein the gearbox is connected to the drive shaft and the sweep wheel,wherein the gearbox is positioned within the pocket of the drive shield,wherein a guide plate covers a portion of the gearbox.
 15. The system ofclaim 9 wherein the sweep wheel includes feet, wherein the feet includeteeth that provide traction.
 16. The system of claim 9 wherein the sweepwheel includes feet, wherein the feet include teeth that mesh withcorresponding features in a floor of the grain bin.
 17. A system forunloading grain out of a grain bin, comprising: a sweep auger; the sweepauger extending a length from an inward end to an outward end; a sweepwheel connected adjacent the outward end of the sweep auger; a gearboxadjacent the outward end of the sweep auger; a drive shield connectedadjacent the outward end of the sweep auger; wherein the drive shieldforms a pocket; the sweep wheel positioned within the pocket of thedrive shield; a guide plate at least partially overlapping the gearboxin a vertical plane; the guide plate positioned within the pocket of thedrive shield; wherein the sweep wheel spins within the pocket of thedrive shield such that grain piles up within the pocket and moves bygravity over the guide plate and in the path of the sweep auger.
 18. Asystem for unloading grain out of a grain bin, comprising: a sweepauger; the sweep auger extending a length from an inward end to anoutward end; a sweep wheel connected adjacent the outward end of thesweep auger; wherein the sweep wheel includes a plurality of arms,wherein the arms includes feet, wherein the feet include teeth; a driveshield connected adjacent the outward end of the sweep auger; whereinthe drive shield forms a pocket; the sweep wheel positioned within thepocket of the drive shield; wherein the sweep wheel rotates, such thatthe teeth of the feet of the sweep wheel mesh with correspondingfeatures in a floor of the grain bin thereby providing traction anddrive; wherein the features in the floor of the grain bin are positionedin a strip of flashing positioned around the exterior of the grain binfloor, wherein the strip of flashing includes perforations thatfacilitate air movement through the grain bin floor.
 19. The system ofclaim 18 further comprising a guide plate; the guide plate positionedwithin the pocket of the drive shield; wherein the sweep wheel spinswithin the pocket of the drive shield, such that grain is capturedwithin the pocket and moves by gravity over the guide plate and in thepath of the sweep auger.